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WARNING: This is actually broken - we have self-deadlocks
	         due to concurrent changes in buffer management.
			 Vadim and me are working on it.

Jan
This commit is contained in:
Jan Wieck
2000-07-03 23:10:14 +00:00
parent ef5bea51e1
commit 57d8080a40
43 changed files with 1638 additions and 445 deletions
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33
src/include/postgres.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1995, Regents of the University of California
*
* $Id: postgres.h,v 1.42 2000/06/28 03:32:56 tgl Exp $
* $Id: postgres.h,v 1.43 2000/07/03 23:09:56 wieck Exp $
*
*-------------------------------------------------------------------------
*/
@ -71,8 +71,12 @@ struct varlena
char vl_dat[1];
};
#define TUPLE_TOASTER_ACTIVE
#ifndef TUPLE_TOASTER_ACTIVE
#define VARSIZE(PTR) (((struct varlena *)(PTR))->vl_len)
#define VARDATA(PTR) (((struct varlena *)(PTR))->vl_dat)
#endif
#define VARHDRSZ ((int32) sizeof(int32))
/*
@ -89,8 +93,6 @@ typedef struct varlena VarChar; /* var-length char, ie SQL varchar(n) */
* Proposed new layout for variable length attributes
* DO NOT USE YET - Jan
*/
#undef TUPLE_TOASTER_ACTIVE
#undef TUPLE_TOASTER_ALL_TYPES
#ifdef TUPLE_TOASTER_ACTIVE
typedef struct varattrib
@ -102,14 +104,17 @@ typedef struct varattrib
struct
{
int32 va_rawsize; /* Plain data size */
char va_data[1]; /* Compressed data */
} va_compressed; /* Compressed stored attribute */
struct
{
int32 va_rawsize; /* Plain data size */
int32 va_extsize; /* External saved size */
Oid va_valueid; /* Unique identifier of value */
Oid va_longrelid; /* RelID where to find chunks */
Oid va_rowid; /* Main tables row Oid */
Oid va_toastrelid; /* RelID where to find chunks */
Oid va_toastidxid; /* Main tables row Oid */
Oid va_rowid; /* Referencing row Oid */
int16 va_attno; /* Main tables attno */
} va_external;/* External stored attribute */
@ -117,14 +122,18 @@ typedef struct varattrib
} va_content;
} varattrib;
#define VARATT_FLAG_EXTERNAL 0x8000
#define VARATT_FLAG_COMPRESSED 0x4000
#define VARATT_MASK_FLAGS 0xc000
#define VARATT_MASK_SIZE 0x3fff
#define VARATT_FLAG_EXTERNAL 0x80000000
#define VARATT_FLAG_COMPRESSED 0x40000000
#define VARATT_MASK_FLAGS 0xc0000000
#define VARATT_MASK_SIZE 0x3fffffff
#define VARATT_SIZEP(_PTR) (((varattrib *)(_PTR))->va_header)
#define VARATT_SIZE(PTR) (VARATT_SIZEP(PTR) & VARATT_MASK_SIZE)
#define VARATT_DATA(PTR) (((varattrib *)(PTR))->va_content.va_data)
#define VARATT_CDATA(PTR) (((varattrib *)(PTR))->va_content.va_compressed.va_data)
#define VARSIZE(__PTR) VARATT_SIZE(__PTR)
#define VARDATA(__PTR) VARATT_DATA(__PTR)
#define VARATT_IS_EXTENDED(PTR) \
((VARATT_SIZEP(PTR) & VARATT_MASK_FLAGS) != 0)
@ -142,12 +151,12 @@ typedef struct varattrib
extern varattrib *heap_tuple_untoast_attr(varattrib * attr);
#define VARATT_GETPLAIN(_ARG,_VAR) { \
if (VARATTR_IS_EXTENDED(_ARG)) \
if (VARATT_IS_EXTENDED(_ARG)) \
(_VAR) = (void *)heap_tuple_untoast_attr(_ARG); \
else \
(_VAR) = (_ARG); \
(_VAR) = (void *)(_ARG); \
}
#define VARATT_FREE(_ARG,VAR) do { \
#define VARATT_FREE(_ARG,_VAR) do { \
if ((void *)(_VAR) != (void *)(_ARG)) \
pfree((void *)(_VAR)); \
} while (0)